am 5973eb48: am bf816248: am e51c46b0: Merge "Add ConnectivityManager.unregisterNetworkCallback(PendingIntent) API" into mnc-dev

* commit '5973eb48220e1e44a4a3192cd9740fe8b47f8a3a':
  Add ConnectivityManager.unregisterNetworkCallback(PendingIntent) API